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<h2><span class="refentrytitle">Macro BOOST_TRIBOOL_THIRD_STATE</span></h2>
<p>BOOST_TRIBOOL_THIRD_STATE — Declare a new name for the third state of a tribool. </p>
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<h2 class="refsynopsisdiv-title">Synopsis</h2>
<div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../tribool/reference.html#doxygen.tribool_8hpp" title="Header &lt;boost/logic/tribool.hpp&gt;">boost/logic/tribool.hpp</a>&gt;

</span>BOOST_TRIBOOL_THIRD_STATE(Name)</pre></div>
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<a name="id-1.3.21.5.2.11.4"></a><h2>Description</h2>
<p>Use this macro to declare a new name for the third state of a tribool. This state can have any number of new names (in addition to <code class="computeroutput">indeterminate</code>), all of which will be equivalent. The new name will be placed in the namespace in which the macro is expanded.</p>
<p>Example: BOOST_TRIBOOL_THIRD_STATE(true_or_false)</p>
<p>tribool x(true_or_false); // potentially set x if (true_or_false(x)) { // don't know what x is } </p>
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<div class="copyright-footer">Copyright © 2002-2004 Douglas Gregor<p>Use, modification and distribution is subject to the Boost
    Software License, Version 1.0. (See accompanying file
    <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</p>
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